Chusetts



AJune 12, 1923. 1,458,534

R. M. LovEJoY ELEVATING TRUCK Filed March l 1919 2 Sheets-Sheet l Fig. 1.

, F19. E. 3 29 I 2.

lm/en'or. Ralph M. Lovejoy by msmarm .lune l2, 1923. 1,458,534

R. M. Low-:JOY

ELEVATING TRUCK Filed March l, 1919 2 Sheets-Sheet 2 Fig. 5. 39

Patented June l2, 1923.

UNITED STATES PATENT OFFICE.

RALPH IVI. LOVEJOY, OF MEREDITH, NEX/V HAMPSHIRE, ASSIGNOE TO LEWIS-SHEPARD COMPANY, OF SOUTH BOSTON, MASSACHUSETTS, [a CORPORATION OF MASSA- CHUSETTS.

ELEVATING TRUCK.

Application filed March 1, 1919. Serial No. 280,030.

To all whom t may concern Be it known that l, RALPH M. liovnaor, a citizen of the United States, and resident of Meredith, county of Belknap, State of New Hampshire, have invented an Improvement in Elevating- Trucks, of which the tollowing description, in connection with the accompanying drawing, is a specification, like characters on the drawing` representing;- like parts. u

This invention relates to improvements in elevating' trucks which comprise a load supporting means and wheels and having; means for elevatingthe load .supporting means relatively to the wheels which include interengaging members operable by a handle, which preferably is the steering tongue and in which the descent et the load supporting` means is controlled by a suitable cushioning4 device after the intereng'agine; members have been disengaged and the means `for locking the load supporting means in elevated position released.

One of the objects of the invention is to provide a more convenient means for releasing the interengagingg members which are operated through the tongue or handle to elevate the load supporting means.

Another object of the invention is to provide an improved means for releasing; the

locking' means which sustains the load supporting` means in elevated position.

Another object of the invention is to provide means which may be operated atter disengagement of the elevating means to raise the load supportingmeans sufiiciently to release the .locking means.A

A further feature of the invention is to provide novel fluid operated cushioning device in which the descent of the load sup porting1 means may be regulated by a supplemental piston under the control of the operator and which may be operated manually or through the tongue oiI the truck.

Other objects and features oit the invention will more fully appear from the tollowing description and the accompanyingf drawings and will be pointed out in the annexed claims.

In the drawings:

Fig. 1 is a longitudinal View partly in vertical section of a preferred form oinv elevating truck embodying; my invention,

Fig. 2 is a plan view ot the truck body showing the front extension. or" the load supporting` means and steering head in section, Fig. 3 is an enlarged side elevation showing portions of the interengagingmembers which elevate the load support-mgf means, and one form of (3o-operating` locking' means for sustaining the load supportingF means in elevated position,

Fig. 3a is a detail view showing the positions oi the elevating mechanism when the load supporting means is in elevated position and the locking' mechanism about to be released.

Fig. 4t is a similar view illustrating a diterent 'form of locking` mechanism, and,

Fig. 5 is an enlarged vertical sectional View through the 'liront extension. 'and steering` head ot a truck embodyingV the preferred iorm of my invention and also illustrating in vertical section a novel cushioning device for arresting the descent of the load supporting` means, which is also operable to raise the load supporting1 means suitficiently to disengage the locking devices which retain. it in elevated position. l

The present invention contemplates the production oli `an elevating truck oi novel. and simple construction in which a load supporting means may be elevated relatively to the wheels upon which it is mounted by 'the swinging movement of a handle which preferably is the tongue of the truck, means being' provided for locking' the load supporting' means in elevated position which may be readily`- released to permit the descent of the load.

In trucks of this character it has been customary to mount upon the steering mechanism a tongue capable ot havingv a vertical swinging movement, interengan'ing means being;` connected to the load supporting means and the tongue which may be operated to raise the load supporting; means to the desired elevation, in which position it is retained by a lockingdevice. The interengaging means are then released to per-` mit the 'tongue to be swung into steering,

position. The locking means for holding the load supportingmeans in elevated position have usually been in the form of a dop; or hook pivoted upon one ot the relatively movable members adapted to engage a hook or dop; upon the other. The pressure imposed upon the dog; by the weight of the load supporting; means or the load thereupon makes it ditlicult to disengage 1the locking; means unless the intereiigagp.nn,q means Mere-engaged and the load supporting` means elevated sutliciently to release the pressure upon the locking means so that in the majority ot cases it is necessary to reengage the interengagrinnv members and elevate the platform sufficiently to permit the release oi the lockingmechanism and thereafter to let down the load supporting: means by a reverse movement ot' the handle or tongue from that used to elevate the load supportingmeans.

In the present .invention a novel. locking means is provided which may be easily released by the operator to permit the descent. ot the load thereby avoidinga the necessity of re-engaging said members after the load supporting); means has been raised to the desired height.

ln the construction disclosed herein means are provided for elevating` the load supporting' means step by step and locking' the same at each step of elevation so that in the use ot the truck it is only necessary to raise the load supporting;v means the required distance to permit the tree movement ot' the truck, the construction however. being such that the load supportina` means may be raised to any desired height. Vhere means are thus provided for elevatinp; the load supporting means step ly step it is desirable that means be provided which will permit the descent ofl the load supporting); means directly 'from any elevation which may have been given to it-Without the necessity of letting;` .it down step by step. A. cushioning device has therefore been provided which will gradually arrest the descent of the load supporting means.

A. `further feature oli my invention contemplates providingmeans which will Iact through the cushioning` device to relieve the pressure upon the lockingmechanism so that different types ot locking' mechanism may be employed which heretofore have not been practical by reason oi the diliiculty in-4 herent in releasing them when it was desired to deposit the load.

The preferred embodiment ol my invention is shown in the accompanyingY drawings as applied to a truck having a load supporting means or jgilatiorm '1, consisting' of side rails 2 connected at their rear ends by a cross `member 3 and at their .trontends by a member t having forward eX- tension 5 provided ywith an upwardly extendingcylindrical boss (3 which torms a journal for the steering head. The steering head comprises a cylindrical member 7 rotatably journalled in the boss 6 ot the .load supporting;- means and has upon itsl upper end an integral superstructure consistinf;` of a member S resting; upon the upper end ot the boss 6 and a sector shaped member 9 which desirably may be of skeleton t'orm and provided upon its curved end portion with a series ot locking teeth l0.

in arln 11 depending trom the sector shaped member is provided at its lower end with a pivot 12 upon which a lever. preferably in the form of a tongue lh is mounted. rThe lovver end of the cylindrical member i' of the steering head is provided with a nut 1li which is secured upon it by a setscrew 15 and engages the under `'face 1T of the `forward extension 5 oft the load sup- ]'iortinp means.

si. vertical post 1G is slidably mounted in the cylindrical member 7 of the steering); head and prevented 1.from rotation relatively to said cylindrical member by a 'feather 1S. The steering post 16 is provided at its lower end with a forked portion 19 lin which the steering' wheel 2O is journalled upon a suiti able shaft 21. It will howeverfbo under stood that a truck or any other 'form of steeringv device may be secured to the lower end ot the steering' post.

The steering' post 1G is provided at a distance below the body of the load supporting` means with a collar Q2 which may be forged directly upon the steeringpost or suitably secured thereto. This collar serves upon longitudinal movement oi said steering` post relativ-ely to the trent end of the load supporting means to actuate mechanism for elevating the rear end ot the load supportinnmeans and also serves to support one ot the members ot the cushion ino; device which will hereinafter be more fully described.

.ln order (o elevate the rear end ot the load supportiin;` means simultaneously with the elevation ot the vfront end ot said load supporting; means as the steeringl post 16 is depressed a bell crank lever 23 is mounted in brackets 2117 extending; downwardly troni the -Front end oit the load supportingr means and is operated to cause relative movement between the load supporting means and the rear wheels. @ne arm ot the bell crank lever il?) tion which embraces the collar 9.2. The other arm ot said bell crank lever is piw otally comiccted to a link 2G which extends longitudinally ot and preferably midway oit' the platform and is connected at its rear end to the arm 27 ot a bell. crank lever which is pivoted upon a shaft 28 carried by brackets 29 depending from the rear end of the load supporting means.

The other arm 30 of the bell crank lever is provided with a biturcaied end por extends at an angle to the arm 27 and is provided with the boss 3l. which forms ajournal 'for a sha'tt 32 carrying the rear wheels 35h 34 of the truck. It will therefore be obvious that when the steering post 16 is forced downwardly relatively to the tront end ot the load supporting means the bifurcated end of the bell crank lever` 23 will be depressed, causing the arm 25 oit said bell crank lever to move forward, thus actuating` the link 26 and causing it to draw :forward the arm 27 of the bell crankv lever which supports the rear end of the load supporting;r means thereby depressing the arm thereof and causing an elevatingl movement oit the rear end ot the truck simultaneously with the upward movement of the front end thereof.

The relative movement between the steering post 16 and the load supporting means l is produced in the preferred embodiment of the invention disclosed herein by means o-l a lever which will be termed herein an elevating lever 35 which is pivotally mounted upon a stud 36 and which engages, at a short distance Jfrom its pivot or tulcrurn, an antifriction roller 37 in the upper end ot the steering)`r post 16. The lever desirably is actuated to produce the relative movements between the wheels and load supporting means by interengaging members upon or connected to said lever and to a handle or tongue.

In the present construction the -lever is provided with an arcuate extension 38 provided with teeth 39 corresponding,- to the ratchet teeth l0. The tongue 13 which is desirably in L-shaped 'form has a (io-operating interengaging member or pawl 40 pivoted upon a stud 41 which is so located that when the load supporting means is in lowered position and throughout the elevatingmove-` ments of the tongue the pawl will tend to fall by gravity into the teeth 39 at the end of the lei/ver 35, but when the load supportingr means is in its highest elevated position the pawl 40 will stand in a substantially vertical position.

It will be obvious that by repeated vertical swinging movement othe tongue the pawl 40 may be caused to engage successive teeth 39 in the end of the lever and the load supporting means thereby raised step by step. ln order to lock the load supporting means at each step ot elevation a dog` 42 is pivotally mounted upon the lever and rovided at one end with means engaging` the teeth ot the sector l0 and preferably aft the othery end with means adapted to be operated directly or indirectly by the movement or the tongue to disengage the dog.

ln view ot the difficulty ordinarily encountered in releasing the locking means in trucks of this character I have provided a novel torm of dog in which. the means which engage the ratchet is capable of a rotative movement relative to the teeth which are engaged by it, In Figs. l and 3 a locking dog is shown which consists ot a body portion 42 which is pivoted upon a stun 43 upon the lever 35 and has at one end a member 44 pivotally connected to it by stud 45 located at the lower portion of' the end of said body 42. The member 44 is provided with a toothed end portion 46 which is adapted to engage the teeth of the locking ratchet 1 0 at the rear.

The toothed portion 4G merges into a curved portion 4T which is so constructed that when the pivoted member 44 is swung about the pivot 45 as the loclr is released it will present a smooth curved portion whichv may be engaged by the teeth of the sector l0 during the relative movement between said sector and the lever 35 so that re-engag-ement will be prevented during the descent or" the load supporting means.

A. pin 48 projectinglaterally from the body portion 42 of the locking dog serves to limit the movement of the pivoted member 44 in one direction and the edge 49 ot said member is normally retained against the pin 48 by a helical spring; 50 anchored to pins 51 and 52 upon the body portion and pivoted member respectively of the locking dog. The pin 48 is so positioned as to retain the pivoted member 44 in such position that a line connecting the end ot the tooth 46 with the pivot 43 will extend slightly above the pivot 45 by which the member 44 is connected to the body portion of the dog. By this construction a jointed dog is provided in which the pressure exerted between the lever 35 and the locking rack l() will serve to stili'i'en the dop; while the joint may be easily broken by pressure upon the opposite end of the body portion of the dog. The relation otl the pivots 43 and 45 are such that when pressure is imposed. between the lever 35 and the locking); ratchet 10 the dog is caused to have a. tendency to rotate in counterelockwise direction so that the toothed end 46 of the dog; and the teeth oit the ratchet 10 are held in engagement.

ln order to release the dog` the body portion may be conveniently provided with an extension or tail 53 which may be positioned to engage the pawl 40 which is carried by the tongue 13 as the tongue is raised when the lever 35 is at its lowermost position and the load supporting means consequently in. elevated position. i

liy reason ot this construction the rais-- ing; ot' the tongue 1 3 when the load supporting: means is in elevated. position will first cause the pawl 40 to engage the tail 53 of the donf, and release the pawl 40 from engagement with the teeth 39 of the lever` 35 thereby causing the pawl to rock backward until it rests against a hose` 54 which may be promally retained in retracted position by a helical spring 79 which surrounds the piston stem and abuts at one end against the cap 77 and at its other end against the knob 78.

A conduit having a horizontal portion 8O and an inclined portion 8l provides a bypass S2 connecting the piston chamber 66 with the chamber 83 of the extension 73. The area or this by-pass may conveniently be controlled by a needle valve 84C located in the horizontal portion 8O of the conduit. The port 82 preferably is so located in the extension 73 that the piston 74 may be aused to pass by it by pressure upon the knob 78, thus the piston may be adjusted to control the port 82 of the by-pass or may be forced across it to close the by-pass entirely so that the entire force exerted upon the piston 7d will bear upon the fluid in the cylinder beneath the piston head 68.

In the operation of this mechanism as a cushioning device to arrest the descent or the load supporting means and its load the descent of the piston 65 first causes the valve 7l to close the port 70, aiter which the descent of the piston is controlled by the rate of flow oi the fluid from the extension 83 of the cylinder through the restricted by-pass 8l into the piston chamber 66.

When the load supporting means is raised the ball valve 7l falls from its seat so that the fluid ilows freely from the piston chamber 66 through the ports 69 and 70 into the lower portion of the cylinder.

It the operator desires to arrest the descent ot the load at any point it may be accomplished byi forcing down the supplemental piston 74 until it closes the port S2. The operator may then gradually release the pressure upon the head 78 ol the supplemental piston and permit the load to descend as gradually as desired.

This mechanism may also be utilized to cause a` slight elevation of the load supporting means suiiicient to relieve the pressure between the members oit the locking device. It the operator presses smartly upon the head 78 oit theI supplemental piston the piston will be forced beyond the port 82 and will exert a pressure upon the under face of the lower cylinder head thereby hydraulically raising the plunger 65 and with it the load supporting means.

rIhe pressure upon the head 7 8 ot' the supplemental piston may be made by the foot of the operator and also may` conveniently be produced by a downward movement ot the tongue. y

In the construction illustrated in Figs. l and 5 the tongue is shown as having a boss 85 which is positioned to engage the head 78 of said supplemental piston when the tongue is pressed downwardly a su'llicient distance. By this means a powerful pressure may be applied by the supplemental piston which will enable it to raise the load supporting means a considerable distance and also will permit a steady control ot the load support ing means during its descent.

By using a supplemental mechanism such as that above described tor elevating the load supporting means to release the locking mechanism other types of locking mechanism than that above described may be utilized. For example a counterbalanced dog may be secured to the elevating lever and so arranged that the counterbalancing means will hold lthe dog in engagement with the co-operating locking member during the elevating movement, said counterbalancing means being tl'iereafl'ter shifted manually or automatically to cause the dog to be released when pressure between it and its cri-operatino locking member is relieved.

tluch an automatic dog operated mechanism is illustrated in llig. 5 in which a dog S6 is pivotallyl mounted upon a stud 87 upon the elevating lever 35. A counterweight 88 is pivotally mounted upon a stud 89 in an upwardly extending ear 90 upon said dog and may be positioned to rest against the upper face 91 of said dog` Ithereby normally forcing the toothed end 92 of the dog into engagement with the teeth of the locking ratchet l0. The dog 86 is provided with a shoulder 93 upon the opposite side of the pivot 87 which will engage and support the counterweight S8 when it is swung to that side of its pivot 89.

ln the operation of the device therefore the counterweight 88 will normally be placed in the position shown in iiuli lines in Fig. 5 so that the tooth 92 of the dog will be in position to engage successive teeth upon the locking rack, when the load supporting means has been raised to its desired elevation the counterweight 88 may be thrown to the position indicated in dotted lines wl'ieii'eupon it will act to throw the dog out oi? engage-- ment with the locking ratchet when the load supporting means is elevated by the suppleA mental elevating mechanism suilieiently to relieve the pressure between the dog and the locking rack.

It will be understood that the embodiment or the invention disclosed herein is illustrative in character and is not restrictive and that various modifications in design, torni and arrangement of parts may be made wi 4hin the meaning and scope of the 'following claims. n

Having thus described my invention what l claim as new and desire to secure by lietters Patent is:

l.. ln an elevating truchr comprising wheels and load supporting means, means ttor elevating said load supporting means relatively to said wheels including an elevating lever, a handle, interengaging members connecting lll) said handle and lever operable When the handle is moved in one direction to actuate said elevating lever, locking means Vfor holding the `load supporting means in elevated position. including a dogl pivotally mounted` upon said elevating` lever and a (co-operating member, and means operable by movement of the handle in the opposite direction to release said dog from its engagement with said (,-o-operating locking member.

2. ln an elevating truck comiirising'wheels and load supporting means, means tor elevating said load supporting means relatively to said wheels including an elevating lever, a handle, interengaging members connecting said handle and lever operable when thc handle is moved in one direction to actuate said elevating` leven locking means including a dogr receiving member, a co-oiicrating dog pivotally mounted upon said lever and having a pivoted member engaging said dog receiving member.

3. lin an elevating truck comprising Wheels and load supporting means, means for elevating` said load supporting means relatively to said wheels including an elevating lever,

`a handle, interengaging members connecting saidhandle and lever operable when the handle is 'moved in one direction to actuate said elevating lever, locking means ii'icluding a ratchet and a (3o-operating dog pivotally mounted upon said elevating lever and having a pivot-ally mounted ratchet-ei'igaging member and means operable by the movement oi the handle in the opposite direction to that for elevating to disengage said dog from said ratchet.

il. 1n an elevating truck comprising uWheels and lload supiiorting means, means 'for elevating said load supporting means relativelyl to said Wheels including an elevating lever, a handle, interengaging members connecting said handle and lever operable when the handle is moved in one direction to actuate said elevating lever, locking means including ratchet, a dog pivoted upon said elevating lever and having at one end a pivotally mounted ratchet-engaging member and upon its other end an extended tailv positioned to be engaged by said handle upon movement oil the handle in the opposite direction to that of elevating whereby said movement et the handle may be caused to disengage said dogtrom said ratchet.

5. ln an elevziting truck Wheels, load supporting means and a steering head having a tongue moimted thereon to swing vertically, elevating means including an elevating lever tulcrumeil on said head, :i pawl pivotally mounted upon said tongue adapted upon i'z'tising the tongue, when the platform is lowered, releasably to engage said elevating lever and upon depression to aetuate said elevating lever, lockcomi'n'ising ing means including a dog pivotally mounted upon said elevatinglever having a member positioned to be engaged by said pawl when the tongue is raised With the load supporting means loclred in elevated position so that a further raising of the 'tongue will release said paivl.

6. In an elevating truck comprising Wheels, load supporting n'ieans and a steering head having a tongue mounted thereon to swing vertically, elevating means including an elevating lever having pawl-receiving recesses i'ulcrumed on said head, a pawl pivotally mounted on said tongue adapted upon raising the tongue When the platform is lowered releasably to engage a recess in said elevatii'ig lever and upon depression to actuate said elevating lever, locking means including a ratchet on said steering head and a cci-operating jointed dog pivotally mounted upon said elevating lever and provided with a tail, positionedv to engage ,said paivl when the tongue is raised. with the load supporting means loclred in elevated position, said tail being so disposed that further raising of said tongue will cause said paivl to break the lioint of said dog and release the same trom locking engagement with said ratchet.

i". ln an elevating truck comprising Wheels,l load supporting means and a steering head having a tongue pivotally mounted thereon to swing vertically, step by step elevating means including an elevating lever iulcrumed upon said steering head and having a toothed free end,l means carried by said tongue adapted to engage successive teeth on said elevating lever upon repeated vertical swinging movements of 'the tongue and co-operating locking means upon said elevating lever and steering head.

8. In an elevating truck comprising Wheels, load supporting means and a steering head having a tongue pivotalli,Y mounted thereon to swing vertically, step by step elevating means including an elevating lever ulcruu'ied upon said steeringhead and having a toothed iree end, a ratchet on said I the tongue and means ope 'able by said tongue for releasing said dog.

9.1n an elevating truck comprising Wheels, load supporting means and a steer` ing head having a tongue pivotally mounted thereon to swing vertically, step by step elevating means including an elevating lever fulcrumed upon said steeringliea d and having a toothed tree end, a paivl pivotall7 mounted on said tongue adapted upon raising the tongue Whenthe load supporting means is in lowered position and during the elevating movements to engage the teeth of said elevating lever, niieans for loching said load supporting m rins at each step of elevation and means operable upon raising the tongue when the load supporting means is locked in a predetermined elevated position to disengage said pau/l from said lever.

10. In an elevating truck comprising load supporting means, Wheels and means tor elevating the load supporting means relatively to said Wheels, and mechanical interengaging means for locking said load sup-- porting means in elevated position; means for cushioning the descent oi the load and supplemental means independent of the elevating means for raising load supporting means to remove the pressure between said interengaging locking members Whereby said members may be easily released to permit the load supporting means to descend.

l1. In an elevating truclr comprising load supporting means, Wheels and means 'lor elevating the load supporting means relatively to said Wheels, and mechanical interengaging means 'for locking said load supporting means in eleva-ted position; means ior cushioning the descent of the load and manually operable means acting through said cushioning` means to relieve the pres-- sure imposed upon said locking mea-ns whereby the locking means be easily released to permit the load supporting means to descend.

12. In an elevating truclr comprising load supporting means, Wheels and means ior elevating the load supporting moans relatively to said Wheels, and mechanical interengaging means for locking said load supporting` means in elevated position; fluid operated means for cushioning the descent or the load and manually operable means acting through said cushioning' means to raise the load supporting means to relieve the pressure imposed upon the interengaging locking means whereby said loclring means may be readily released to permit the platform to descend. e

13. In an elevating truclr comprising Wheels, load supporting mean-s means for elevating the same relatively to said wheels; lluid operated mechanism for cushioning the descent oi the load supporting means, including a rluid containingr cylinder and piston and a supplemental piston operable to control the action ol" the l'luid in said cylinder.

14. ln an elevating Wheels, load supporting for elevating the same relatively to said Wheels, fluid operated mechanism or cushioning the descent of the load supporting means, including a Huid containing cyltruclr comprising means and means inder having an extension, a main. piston in said cylinder and a supplemental piston in said extension manually operable to cause said main piston to raise the load supporting means and also operable to control the descent oli said load supporting means.

15. lu an elevating truclr comprising Wheels, load supporting means and means iior elevating the same relatively to said Wheels and means ttor locking the load supporting means in elevated position, iiuid operated mechanism lor cushioning the descent o the load supporting means .including a fluid containing cylinder having at its lower end an extension, a chambered main piston in said cylinder having at its lower end a valve adapted to close upon descent et said piston, a by-pass connecting said piston chamber to said extension and means for varying the area of said by-pass whereby the descent ol the main piston may be regulated and a piston in said extension operable to raise the load supportingmeans whereby the locking mechanism may be readily released.

16. ln an elevating truck comprising wheels, load supporting means and means for elevating the same relatively to said Wheels; fluid operated mechanism for cushioning thc descent of the load supporting means including a iiuid containing cylinder having at its lower end a tubular eXtenion, a chambered main piston in said cylinder, a valve in the lower head of said piston adapted to close upon descent of said piston, a by-pass connecting said piston chamber to said extension and a supplemental piston in said extension reciprocable across the port of said by-pass in said eX- tension whereby said supplemental piston is operable to control the flow of fluid through said by-pass and also to act upon the fluid in said cylinder beneath said main piston.

17. ln an elevating truclr comprising wheels, load supporting means and swinging mechanism having a vertically swinging tongue mounted thereon, elevating means operable by the vertical swinging movement or said tongue, means for locking the load supporting means in elevated positiommeans for cushioning the descent ot the load supporting means and means operable by said tongue through said cushioning means to raise said load supporting means suiiiciently to permit the disengagement of said locking met ns.

18. ln an elevating truck comprising Wheels, load supporting means and steering mechanism including a tongue mounted to swing vertically, elevating means including inter-engaging means pivotally mounted respectively upon said load supporting means and said tongue, loclring means and means yfor cushioning the descent of said load supporting means including a, cylinder having at its lower end a tubular extension, a charnbered piston n said eylinc'ler, a luy-pass conneetng the Chamber of said piston with said 5 extension, a supplemental piston in said eX- tenson adapted to be engaged by said tongue and operated thereby to raise the load snpporting means suffeiently to release the locking means and operable by said tongue to control the descent of the load supporting l0 ineens.

In estlnony whereof, I have signed my lnune to this Specification.

' RALPH M. LOVEJOY. 

